BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 United States 180 38.7%
2 China 171 36.8%
3 Germany 37 8%
4 Hong Kong 22 4.7%
5 Taiwan 13 2.8%
6 Netherlands 10 2.2%
7 Canada 9 1.9%
8 United Kingdom 5 1.1%
9 Singapore 4 0.9%
10 Japan 4 0.9%
11 India 3 0.6%
12 France 2 0.4%
13 Korea, Republic of 2 0.4%
14 Northern Mariana Islands 1 0.2%
15 Australia 1 0.2%
16 Guam 1 0.2%